ER Diagram Tool

Creating of Entity-Relationship Diagrams (ERDs) is a complex process that requires convenient, automated tools. ConceptDraw PRO diagramming and vector drawing software offers a powerful ER Diagram Tool - the Entity-Relationship Diagram (ERD) Solution from the Software Development Area.

Entity-Relationship Diagram (ERD) Solution gives all opportunities for quick, easy and effective drawing professional looking ER diagrams.

ER Diagram Tool

Sample 1. ER Diagram Tool - ERD Crow’s Foot Notation

Entity-Relationship Diagram (ERD) Solution contains two libraries:

  • ERD Chen's Notation Library
  • ERD Crow’s Foot Notation Library

with large quantity of vector objects that will allow to design the ER diagrams using any notation - Chen′s or Crow′s Foot.

ERD Chen's Notation Library Design Elements

Sample 2. ERD Chen's Notation Library Design Elements

ERD Chen's Notation Library contains 28 vector objects.

ERD Crow's Foot Notation Library contains 17 vector objects.

ERD Crows Foot Notation Library Design Elements

Sample 3. ERD Crows Foot Notation Library Design Elements

One of the most useful ER diagram tool that provides Entity-Relationship Diagram (ERD) Solution for ConceptDraw Solution Park is its collection of predesigned ERD templates and samples. They are available for viewing and changing from ConceptDraw STORE.

ER Diagram - ERD Chen's Notation

Sample 4. ER Diagram - ERD Chen's Notation

The examples you see on this page were created in ConceptDraw PRO using the tools of Entity-Relationship Diagram (ERD) Solution. An experienced user spent 15 minutes creating every of them.

Use Entity-Relationship Diagram (ERD) solution for designing your own professional looking ERD Diagrams quick, easy and effective.

All source documents are vector graphic documents. They are available for reviewing, modifying, or converting to a variety of formats (PDF file, MS PowerPoint, MS Visio, and many other graphic formats) from the ConceptDraw STORE. The Entity-Relationship Diagram (ERD) Solution is available for all ConceptDraw PRO v9.5 or later users.




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TEN RELATED HOW TO's:

Software development with ConceptDraw PRO

When we think about programming, we usually imagine sleepless nights spent on writing kilobytes of code. However, from another point of view, Software development with ConceptDraw PRO makes a programmer's life endlessly easier. This tool is unique to fulfill all your needs in short period of time. Over the recent years object-oriented methodology has become more and more widespread. Thanks to this methodology developers manage to deal with growing complexity of applications. More and more programs are written in such programming languages as C++, Java, Visual Basic and Object Pascal. However, the complexity of the designed systems imposes extended requirements as to design of graphic documentation. ConceptDraw possesses powerful tools for designing of technical documentation for object-oriented projects. The libraries included in the package allow to easily draw class hierarchies, object hierarchies and diagrams of data flows with the use of the most popular notations, including UML and Booch notations. And the library for projecting COM-interfaces will spare developers of ActiveX-servers a headache.ERD example - Students and teachers database layout
Picture: Software development with ConceptDraw PRO

Entity Relationship Diagram Examples

An abstract representation is usually the first thing you will need while developing a database. To understand the ways that databases are structured, you should look through entity-relationship diagram examples and see the notations features and attributes. With an entity-relationship model you can describe a database of any complexity. This Entity-relationship diagram is a tool for software developers. It enables every element of database to be managed, communicated and tested before release. This ERD was created using symbols advocated by Chen's notation. Because of a linguistic origin of the Chen’s notation, the boxes representing entities could be interpreted as nouns, and the relationships between them are in verb form, shown on a diagram as a diamond.Entity Relationship Diagram Examples
Picture: Entity Relationship Diagram Examples
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Entity Relationship Diagram Examples

ConceptDraw PRO diagramming and vector drawing software offers the Entity-Relationship Diagram (ERD) Solution from the Software Development Area for ConceptDraw Solution Park. How many examples contains the Entity-Relationship Diagram (ERD) Solution! All Entity Relationship Diagram examples were designed and saved for ConceptDraw PRO users. Now they are available from ConceptDraw STORE.Entity Relationship Diagram Examples
Picture: Entity Relationship Diagram Examples
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Design Element: Crows Foot for Entity Relationship Diagram - ERD

The first thing that usually comes to mind when talking about database models is ER-diagrams, and the ways to create them. The second most recognizable notation is the Crow’s Foot, which visually differs from Chen’s notation. Actually, it doesn’t matter which notation you’ll use for your entity relationship diagram (ERD), but the content is what matters. When designing an Entity-Relationship Diagram one need to use a certain notated symbols that were developed and standardized especially for databases description. First of them - the Chen’s notation had a linguistic origin. It includes rectangle boxes to show entities that may be described as nouns, and the relationships between them described as verbs depicted in a form of diamond. Finally the Chen’s notation was simplified up to the Crow’s Foot notation. It represents a relationship as labeled line. It is precisely this notation is shown in the given figure. ConceptDraw PRO together with its Entity-Relationship Diagram (ERD) solution is designed to support professionals who deals with creating ER diagrams using the element of both - Chen’s and Crow's Foot notations.Entity Relationship Diagram, Design Elements - Crows Foot  (Win Mac)
Picture: Design Element: Crows Foot for Entity Relationship Diagram - ERD
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Components of ER Diagram

It is easy to recreate any informational system structure using diagrams. There are three main components of any ER diagram: entity, attribute and relationship. Basing on these three components, one can define other, less used elements, such as weak entity or relationship, derived attribute, recursive relationship etc. This is the set of graphic elements of ERD Chen's notation. This ERD notation is used to represent an entity–relationship models. It involves the set of geometric forms: rectangles - depicting entities, ovals - representing attributes and diamonds depicting relationships assigned for first-class objects, that can have relationships and attributes of their own. Connections are displayed with arrowed lines. It is known that the Chen's ERD notation is used to show a detailed view of entities and relationships. ConceptDraw Entity-Relationship Diagram solution from the Software Development section of Solution Park provides the ability to create ERD of database structure for software development purposes using the Chen’s notation elements.Components of ER Diagram
Picture: Components of ER Diagram
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Entity-Relationship Diagram (ERD) with ConceptDraw PRO

Database structures are usually described by ER-diagrams which represents entities as boxes with lines-connections between them. You can create any entity-relationship diagram (ERD) by means of ConceptDraw PRO using ready-to-use templates and special libraries containing all the needed symbols and shapes. Creating a model for your database from now on can take just a few minutes. ERD (entity relationship diagram) designed to show the logical structure of databases. It intended to depict the relationships between data components (entities). ERDs are a popular tool for software engineers and architects. Using ERD they can manage the every aspect of database design. Also ERD can be used as guidelines for testing and communications before software release. This diagram represents the file reference system of the WordPress web platform. Because entity relationship diagrams have such a broad application area through the prevalence of database technology, it can be applied for a wide range of users.erd diagram example, er-diagram design software
Picture: Entity-Relationship Diagram (ERD) with ConceptDraw PRO
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Chen ERD Diagram

The vector stencils library Chen ERD from the solution Entity-Relationship Diagrams (ERD) contains specific symbols of the Chen ERD notation including entity symbols and relationship symbols for ConceptDraw PRO diagramming and vector drawing software. The Entity-Relationship Diagrams (ERD) solution is contained in the Software Development area of ConceptDraw Solution Park.Chen ERD Diagram - Database of a Surgeon
Picture: Chen ERD Diagram
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Design Element: Chen for Entity Relationship Diagram - ERD

It is very difficult to get into database model idea without any examples. To create one, you can use Chen’s notation for Entity Relationship Diagrams (ERD) and try to see all the peculiarities yourself. This notation describes entities and relations as basic geometric shapes like rectangles and diamonds. Chen notation for Entity-relationship diagrams is used for designing relational databases. It depicts the database entities as a set of subjects. For example events, people, ideas, etc. All entities has common characteristics (attributes). Any object of the system is identified as the sole and unique. The name of entity should indicate the class or type of the the whole object, not a given example. The connection commonly represents a relationship between entities. Conceptdraw Entity-Relationship Diagrams (ERD) solution provides the libraries with ready-to-use ERD element fitting Chen's notation objects and relationships.ERD. Entity Relationship Diagram, Design Elements - Chen (Win Mac)
Picture: Design Element: Chen for Entity Relationship Diagram - ERD
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Yourdon and Coad Diagram

The vector stencils library Yourdon and Coad Notation from the solution OOAD contains specific symbols of the Yourdon and Coad notation such as data store symbol, data process symbol, loop symbol for ConceptDraw PRO diagramming and vector drawing software. The OOAD solution is contained in the Software Development area of ConceptDraw Solution Park.Yourdon and Coad diagram - order process
Picture: Yourdon and Coad Diagram

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Why to import PowerPoint slides into ConceptDraw MINDMAP?Mind map presentation - Technology blog
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